[sdiy] electrolytic coupling capacitors

[blitz]

I'm building a small mixer with gain and need to couple the the 
output to remove DC.  From circuit analysis I need a 10uF cap in 
series on the inputs and output to remove the DC offset.  10uF is 
pretty large, so the only available caps I have are electrolytic with 
polarity.  Can I use an electrolyitic in place of a non-polarity 
coupling capacitor?  How do I know which end the +/- should be 
connected to?

thanks,
-Joe